Bug 1358589

Summary: cups doesn't log errors in error_log
Product: [Fedora] Fedora Reporter: udayb <udayreddy>
Component: cupsAssignee: Zdenek Dohnal <zdohnal>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 24CC: jpopelka, twaugh, zdohnal
Target Milestone: ---Keywords: Reopened
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: cups-2.1.4-2.fc24 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-08-05 20:53:22 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
cupsd.conf
none
cups-files.conf none

Description udayb 2016-07-21 04:33:29 UTC 
Description of problem:

cups doesn't log errors in /var/log/cups/error_log

Version-Release number of selected component (if applicable):
2.1.4-1.fc24.x86_64

I have trouble printing to a HP laserjet printer connected to the network. systemctl status cups reveals 

Connected to printer.
Jul 21 09:51:15 [...] cupsd[11086]: Connected to 10.192.36.80:9100...
Jul 21 09:51:15 [...] cupsd[11086]: backendRunLoop(print_fd=0, device_fd=8, snmp_fd=7, addr=0x55dd4ec790c8, use_bc=1, side_cb=0x55dd4e4de0f0)
Jul 21 09:51:15 [..] cupsd[11086]: STATE: +cups-waiting-for-job-completed
Jul 21 09:51:15  cupsd[11086]: Waiting for printer to finish.
Jul 21 09:51:17  cupsd[11086]: PID 11186 (/usr/lib/cups/backend/socket) exited with no errors.
Jul 21 09:51:17  cupsd[11086]: Job stopped due to filter errors; please consult the error_log file for details.
 Job stopped due to filter errors; please consult the error_log file for details.

However, /var/log/cups/error_log is always empty.


How reproducible:
Always

Steps to Reproduce:
1. On a printer error, check cups' error_log

Actual results:
/var/log/cups/error_log is empty

Expected results:
Was expecting an error

Additional info:
Comment 1 Zdenek Dohnal 2016-07-22 06:23:39 UTC 
Hi Nineth,

thank you for contacting us. Can you send me your cupsd.conf and cups-files.conf? It seems cups-2.1 and newer uses syslog as default error_log.
Comment 2 udayb 2016-07-22 08:46:00 UTC 
Created attachment 1182748 [details]
cupsd.conf
Comment 3 udayb 2016-07-22 08:46:22 UTC 
Created attachment 1182749 [details]
cups-files.conf
Comment 4 Zdenek Dohnal 2016-07-22 09:12:31 UTC 
When you change line "ErrorLog syslog" to "ErrorLog /var/log/cups/error_log", it will work (worked in my case). Can you try it, please?
Comment 5 Zdenek Dohnal 2016-07-22 09:54:21 UTC 
According to http://fedoraproject.org//wiki/Changes/CupsJournalLogging , this is expected behaviour by default. You can change that location by changes from Comment 4.
Comment 6 udayb 2016-08-01 06:07:29 UTC 
Yes, but the file I posted the messages was the syslog itself! If the error log was set to syslog, there should have been errors messages - but there aren't any. So cups isn't sending its errors to syslog as well.
Comment 7 udayb 2016-08-01 06:21:03 UTC 
I just verified - changing the error_log to /var/log/cups/error_log gives me all the relevant errors there, but having it set to syslog doesn't give me those errors in /var/log/messages.
Comment 8 Zdenek Dohnal 2016-08-01 07:47:34 UTC 
So when you set ErrorLog to /var/og/cups/error_log, it works correctly, but when it is set to syslog, error logs do not appear in /var/log/messages? If it is the case, I will change bug's name.
Comment 9 Zdenek Dohnal 2016-08-01 14:03:42 UTC 
https://fedoraproject.org/wiki/Changes/NoDefaultSyslog No /var/log/messages is on Fedora by default since Fedora 20 release. Default utility for logs is journalctl since that. Is that problem which you are reporting (no errors in /var/log/messages)? Because I tried to reproduce your issue with both ways of logging errors (syslog and /var/log/cups/error_log) and same error messages appeared in both, journal and /var/log/cups/error_log. Are there errors, which do not appear in journal, but appeared in /var/log/cups/error_log?
Comment 10 udayb 2016-08-01 15:41:14 UTC 
I see. I should've been looking at the journal then - I was misled by the fact that ErrorLog was "syslog". I guess it should be called "journal" since it's the systemd journal.
Comment 11 Zdenek Dohnal 2016-08-03 11:31:15 UTC 
I can not rename this option, because it would be operation system specific change and upstream would not accept patch for this. But I can add text into comment above option, mentioning syslog = systemd journal by default.
Comment 12 Fedora Update System 2016-08-03 12:15:25 UTC 
cups-2.1.4-2.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-56017ec8d4
Comment 13 Fedora Update System 2016-08-04 01:54:41 UTC 
cups-2.1.4-2.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-56017ec8d4
Comment 14 Fedora Update System 2016-08-05 20:53:20 UTC 
cups-2.1.4-2.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.